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BUTLER MATRIX CIRCUIT, PHASED ARRAY ANTENNA, FRONT-END MODULE, AND WIRELESS COMMUNICATION TERMINAL
BUTLER MATRIX CIRCUIT, PHASED ARRAY ANTENNA, FRONT-END MODULE, AND WIRELESS COMMUNICATION TERMINAL
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机译:BUTLER矩阵电路,相控阵天线,前端模块和无线通信终端
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摘要
[Object] There is provided a Butler matrix circuit that makes it possible to further reduce volume and power consumption and to obtain symmetrical radiation characteristics.;[Solution] There is provided a Butler matrix circuit including: four processing-circuit-side terminals; four antenna-side terminals; a first 90° hybrid coupler coupled to a first processing-circuit-side terminal and a second processing-circuit-side terminal; a second 90° hybrid coupler coupled to a third processing-circuit-side terminal and a fourth processing-circuit-side terminal; a third 90° hybrid coupler coupled to a first antenna-side terminal and a third antenna-side terminal; a fourth 90° hybrid coupler coupled to a second antenna-side terminal and a fourth antenna-side terminal; a first 90° delay circuit provided between the first 90° hybrid coupler and the third 90° hybrid coupler; and a second 90° delay circuit provided between the first 90° hybrid coupler and the fourth 90° hybrid coupler.
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